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參數(shù)資料
| 型號(hào)： | LS7232NT-S |
| 英文描述： | Industrial Control IC |
| 中文描述： | 工業(yè)控制IC |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大?。?/td> | 73K |
| 代理商： | LS7232NT-S |
EXTN
2K
,1/4W
IN914
TOUCH PLATE
*R
200K
,1/4W
MPS8599
FIGURE 6. ELECTRONIC EXTENSION
*R
P
*R
= 2M
,1/4W for 115VAC
*R
= 3.6M
,1/4W for 220VAC
VSS
VDD
DOZE
SWITCH
FIGURE 7. DOZE CIRCUIT
3.3M
,1/4W
+
-
3.3M
,1/4W
10μF
SENS
DZ
U1-1
U1-2
U1-3
DZ
U1 = CD4093
EXTENSIONS:
All switching and dimming functions can also be implemented by utilizing the EXT input. This can be
done by either a mechanical switch or the electronic switch in conjunction with a Touch Plate as shown in
Figure 6. When the plate is touched, a logic high level is generated at the EXT input of the IC for both
half- cycles of the line frequency. (See Figure 5)
DOZE CIRCUIT:
The DOZE circuit shown in Figure 7 generates a slow clock (0.04Hz) at the DZ terminal. If the Touch Plate
(Figure 5) is not touched, the SENS terminal of the DOZE circuit of Figure 7 sits at a logic high level. A mo-
mentary pressing of the DOZE switch sets the SR flip-flop, enabling the oscillator. Every negative transition
of the clock (DZ terminal) causes the light intensity to be reduced by equal increments, until eventually the
light is shut off. The oscillator has no further effect on the dimmer circuit. When the light is turned on again
by touching theTouch Plate, the SR flip-flop is reset and the DZ clock is turned off.
When the DOZE circuit is used, the connection between DOZE input (Pin 2) and V
SS
(Pin 1) as shown in
Figure 5, should be removed.
.
7231-4-041195-7
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